The game itself is a pre-release you can get access to for $15. The current ver is going to go free later, with a better ver for payed customers. Price also goes up to $20 at that time.

It's pretty fun. Very hard to make a Kilo ship (best class parts in the game), which is what's keeping me playing atm. I'd recommend you hold out until the future version comes to buy it, or if you're feeling adventurous (or are just have tons of money), go ahead and buy it. :]